Cleanup: remove frontend, move JSONs to json/ top-level (#12813)

json/threadfin.json

@@ -0,0 +1,35 @@
+{
+  "name": "Threadfin",
+  "slug": "threadfin",
+  "categories": [
+    13
+  ],
+  "date_created": "2024-06-12",
+  "type": "ct",
+  "updateable": true,
+  "privileged": false,
+  "interface_port": 34400,
+  "documentation": "https://github.com/xteve-project/xTeVe-Documentation/blob/master/en/configuration.md",
+  "website": "https://github.com/Threadfin/Threadfin",
+  "logo": "https://cdn.jsdelivr.net/gh/selfhst/icons@main/webp/threadfin.webp",
+  "config_path": "",
+  "description": "Threadfin is a M3U proxy for Kernel, Plex, Jellyfin, or Emby, based on xTeVe.",
+  "install_methods": [
+    {
+      "type": "default",
+      "script": "ct/threadfin.sh",
+      "resources": {
+        "cpu": 1,
+        "ram": 1024,
+        "hdd": 4,
+        "os": "debian",
+        "version": "13"
+      }
+    }
+  ],
+  "default_credentials": {
+    "username": null,
+    "password": null
+  },
+  "notes": []
+}